#include <iostream>
#include <vector>

using namespace std;

int main()
{
	int ar[] = { 1,2,3,4,5,6,7,8,9,10 };
	int n = sizeof(ar) / sizeof(int);
	vector<int> v(ar, ar + n); //10 10
	cout << v.size() << ":" << v.capacity() << endl;
	v.reserve(100);
	v.resize(20);
	cout << v.size() << ":" << v.capacity() << endl; //20 100
	v.reserve(50);
	v.resize(5);

	cout << v.size() << ":" << v.capacity() << endl; // 5 100

}

